Journal of Electrochemical Science and Engineering
type: channel
description: Journal of Electrochemical Science and Engineering (ISSN 1847-9286) is an international, peer-reviewed open-access journal devoted to the rapid dissemination of new and original scientific results in all areas of electrochemical science, engineering, technology and material engineering.
publisher: International Association of Physical Chemists (IAPC)
language: en
publication name: Journal of Electrochemical Science and Engineering
issn: 1847-9286
items: Validation of a low-cost carbon screen-printed electrode platform: a statistical approach
items: Scaling-ion removal from high-salinity produced water via sono-electrocoagulation: interplay of floc microstructure and electrochemical surface activity
items: Rapid and sensitive electrochemical determination of phosphate ions using a multi-walled carbon nanotube carbon paste electrode
items: Transition metal oxide-modified carbon electrodes: A comprehensive review on surface area modulation and Randles-Ševčik electrochemical insights
items: Synergistic effects of NH2-MIL-101(Fe) metal-organic framework and Pd nanoparticles for sensitive determination of norepine­phrine in the presence of acetaminophen
items: Parameter selection of cerium oxide anodic electrodeposition on screen-printed carbon electrodes using response surface methodology for nucleic acid based biosensors
items: Mango peel extract as a green inhibitor in the corrosion of reinforced concrete
items: Exploring the inhibitory performance of expired moxifloxacin and norfloxacin on copper corrosion in saline environment
items: Porcine gelatine detection via electrochemical immunosensors utilizing green-synthesized cerium oxide nanoparticles from orange peel
items: Carbon paste electrode modified with Bi2WO6 nanosheets and ionic liquid: voltammetric assay of dasatinib in the presence of doxorubicin as two anticancer drugs in pharmaceutical and biological samples
items: Self-healing efficiency of ceria-doped Zn-Co coatings: Insights into particle-free versus biphasic plating baths
items: Improved performance of nitrate extended gate field effect transistor sensor through deposition of polymer layer at various withdrawal speeds using dip coating method
items: Electrodeposition of Ni-Co thin films from ammonia-chloride electrolyte
items: Influence of irradiation treatment on sensing performances of screen-printed electrodes aimed for doxorubicin monitoring
items: Correlation between diffusion and kinetic behaviour of metal hydride battery: voltammetry and impedance analyses
items: Improving the corrosion behaviour of Zn-Ni alloy coatings on 316 SS from chloride-sulfate bath by addition of triethanolamine or sucrose
items: Immobilized triton X-100 voltammetric sensor for the simultaneous detection of sunset yellow and tartrazine
items: Comparative voltammetric determination of ascorbic acid at three different carbon electrodes: application of carbon screen-printed electrode for citrus fruits analysis
items: Label-free electrochemical immunosensor for porcine gelatin using a boron-doped diamond electrode via diazonium salt electrografting
items: Electrochemical modulation of annealed steel via cupric sulfate, potassium chloride and trisodium citrate: insights into redox behaviour and corrosion resistance
items: Green inhibitor for corrosion protection of ASTM A1011 steel in saline medium using a dynamic system
items: Integrated bio-electro-Fenton approach for efficient removal of the antiviral sofosbuvir in aqueous medium: kinetics, parameters optimization, mineralization pathway, and biodegradability enhancement
items: Electrochemical and adsorption study of environmentally friendly inhibitor used for low carbon steel
items: Design, fabrication and functional properties of titanium suboxide-based composites with low noble metal content for electrocatalytic applications
items: Particle velocity effects on erosion-corrosion of AISI 1020 carbon steel in CO₂-saturated drilling mud
items: Development of non-invasive genosensor to diagnose pancreatic cancer using miRNA-196a
items: Electrochemical determination of paracetamol and chlorpheniramine using AuNPs-rGO modified glassy carbon electrode
items: Application of a cobalt(II) coordination complex in the electrochemical detection and quantification of adrenaline
items: Electrochemical micromachining of galvanized iron sheets: process optimization and performance evaluation
items: Fabrication of a sensitive electrochemical sensor based on CuS-modified carbon paste electrode for hydrazine analysis in water samples

Validation of a low-cost carbon screen-printed electrode platform: a statistical approach
type: item
description: Electrochemical sensors have gained increasing attention for their high selectivity and sensitivity. Screen-printed electrodes (SPEs) are particularly attractive as low-cost, disposable, and scalable platforms that enable miniaturized electrochemical cells and field-deployable measurements. Here, we report a low-cost and easily fabricated carbon paste -SPE platform consisting of a 3D-printed acrylonitrile butadiene styrene body filled with carbon paste (graphite/mineral oil, 70:30) and a silver-ink pseudo-reference electrode. The device was evaluated using potassium ferricyanide (5.0 mmol L-1 in 0.5 mol L-1 KCl) as a redox probe. The ipa/ipc ratio was close to unity, while the peak-to-peak separa­tion (ΔEp≈949 mV) indicated kinetic/ohmic contributions typical of composite carbon-based printed electrodes. A linear relationship between the corrected anodic peak current (iap) and the square root of the scan rate (v1/2) yielded an electroactive area of 0.485 cm², substantially larger than the geometric area, consistent with surface heterogeneity/porosity. Statistical validation by ANOVA confirmed good repeatability and reproducibility (p > 0.05, 95 % confidence). Overall, the proposed CP-SPE provides a robust and reproducible low-cost platform with strong potential for voltammetric sensing applications.
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical Sensors
  topic: keywords
subject: voltammetry
  topic: keywords
subject: electrochemical validation
  topic: keywords
subject: statistical techniques
  topic: keywords
subject: repeatability
  topic: keywords
subject: reproducibility
  topic: keywords
creator: Juliene Morais de Faria
creator: Thomaz Henrique da Cunha Reis
creator: Larissa Silva de Azevedo
creator: Caio Henrique Pinke Rodrigues
creator: Aline Thaís Bruni
creator: Marcelo Firmino de Oliveira
rights: Copyright (c) 2026 Juliene Morais de Faria, Thomaz Henrique da Cunha Reis, Larissa Silva de Azevedo, Caio Henrique Pinke Rodrigues, Aline Thaís Bruni, Marcelo Firmino de Oliveira https://creativecommons.org/licenses/by/4.0
date: 2026-04-10
publication date: 2026-04-10
doi: 10.5599/jese.3168

Scaling-ion removal from high-salinity produced water via sono-electrocoagulation: interplay of floc microstructure and electrochemical surface activity
type: item
description: Produced water from oil fields contains complex dissolved organic and inorganic species, including Ca²⁺, HCO₃⁻, and CO₃²⁻, which induce CaCO₃ scaling and hinder waterflooding operations. This study investigated the performance of electrocoagulation (EC) and ultrasonic-assisted electrocoagulation (sono-EC) for treating native produced water from Indonesian oil fields, focusing on scaling ion removal, floc structural characteristics, and hydrogen evolution. Experiments were conducted at pH 5, 7 and 9 using Al-SS316 electrodes under constant current conditions, with intermittent sonication applied to enhance Al³⁺ release and suppress electrode passivation. The results demonstrated that pH 7 provides optimal conditions for the formation of stable amorphous Al(OH)₃ flocs. Scanning electron microscopy analysis revealed a porous lamellar morphology that promotes ion adsorption and co-precipitation, resulting in the highest removal efficiencies of Ca²⁺, HCO₃⁻ and chemical oxygen demand (COD). Sonication further enhanced process performance by inducing cavitation-driven micro-mixing, accelerating floc growth, and increasing hydrogen evolution. Brunauer-Emmett-Teller and Barrett-Joyner-Halenda analyses confirmed pro­nounced pH-dependent differences in floc porosity and surface characteristics, which mechanistically explained variations in ion capture behaviour. Overall, the sono-EC operated at neutral pH offers an effective strategy to mitigate scaling potential, while hydrogen evolution is used as an electrochemical indicator of cathodic surface activity.
subject: Electrochemical Engineering
  topic: section
subject: Produced water pollutants
  topic: keywords
subject: electrochemical removal
  topic: keywords
subject: ultrasonic treatment
  topic: keywords
subject: scale causing ions
  topic: keywords
subject: flocs characterization
  topic: keywords
subject: hydrogen evolution
  topic: keywords
subject: Faradaic efficiency
  topic: keywords
creator: Reno Pratiwi
creator: Kartika Fajarwati Hartono
creator: Maman Djumantara
creator: Dina Asmaul Chusniyah
creator: Wiwik Dahani
creator: Tiur Elysabeth
rights: Copyright (c) 2026 Reno Pratiwi, Kartika Fajarwati Hartono, Maman Djumantara, Dina Asmaul Chusniyah, Wiwik Dahani, Tiur Elysabeth https://creativecommons.org/licenses/by/4.0
date: 2026-04-05
publication date: 2026-04-05
doi: 10.5599/jese.3237

Rapid and sensitive electrochemical determination of phosphate ions using a multi-walled carbon nanotube carbon paste electrode
type: item
description: Phosphates are widely used in food as texture modifiers, preservatives and flavour enhan­cers, while excessive intake may negatively affect human health and the environment. Consequently, there is a growing demand for low-cost, portable, and reliable tools for phosphate monitoring in food and water samples. In this work, an electrochemical sensor based on a multi-walled carbon nanotube (MWCNT) modified carbon paste electrode (CPE) was developed for phosphate determination. Phosphate detection was based on the electrochemical reduction of an electroactive phosphomolybdate complex formed in acidic medium (50 mM sulfuric acid). Key analytical parameters, including solution acidity and complexation time, were optimized to enhance sensor performance. Carbon nanotube modification significantly enhanced the electrochemical response. While the bare CPE shows weak, poorly defined redox peaks due to limited electron transfer and low surface area, MWCNT-modified CPE exhibits well-defined peaks with ~6-fold higher current, reflecting improved sensitivity, faster electron transfer, and better peak separation. Using square-wave voltammetry, the sensor exhibited a linear response in the phosphate concen­tration range of 3.1 to 21.7 mg L⁻¹, with a detection limit of 0.03 mg L⁻¹ and a response time of approximately 10 s. The sensor was successfully applied to real sausage samples, yielding recoveries of 94.6 to 97.2 % with relative standard deviation values below 5 %. The presented MWCNT-CPE sensor provides a cost-effective, portable and simple device for fast and reliable in situ detection of phosphate in food and water samples.
subject: Electroanalytical chemistry
  topic: section
subject: Phosphate anion sensing
  topic: keywords
subject: nanomaterial-modified electrode
  topic: keywords
subject: phosphomolybdate complex
  topic: keywords
subject: voltammetric methods
  topic: keywords
subject: real food samples
  topic: keywords
creator: Qendresa Istrefi
creator: Nevila Broli
creator: Loreta Vallja
creator: Sonila Duka
creator: Sadik Cenolli
rights: Copyright (c) 2026 Qendresa Istrefi, Nevila Broli, Loreta Vallja, Sonila Duka, Sadik Cenolli https://creativecommons.org/licenses/by/4.0
date: 2026-04-05
publication date: 2026-04-05
doi: 10.5599/jese.3261

Transition metal oxide-modified carbon electrodes: A comprehensive review on surface area modulation and Randles-Ševčik electrochemical insights
type: item
description: The exceptional catalytic properties of transition metal electrocatalysts, including high activity, stability, electronic properties, and selectivity in various electrochemical processes, make them essential in electrochemistry. The combination of these electrocatalysts with carbon-based interfaces improves their performance by providing increased electrical conductivity, greater surface areas, and robust structural support. Expanding the electrode area by offering more active sites for the processes and boosting efficiency increases the catalytic activity. This review emphasizes the importance of maximizing electrode surface area and the variations in transition metal oxides (TMOs) with carbon interfaces to achieve excellent performance in various electrochemical applications. Special focus is given to the Randles-Ševčik equation as a fundamental tool for evaluating the electroactive surface area and charge transfer properties of TMO-modified electrodes. Furthermore, the review discusses the influence of structural modifications on catalytic performance. By summarizing recent advancements and challenges, this study aims to provide a comprehensive under­standing of the potential of transition metal oxides as efficient electrocatalysts for sustainable energy and sensing applications.
subject: Electroanalytical chemistry
  topic: section
subject: Transition metals
  topic: keywords
subject: electrode modifiers
  topic: keywords
subject: electrocatalysts
  topic: keywords
subject: cyclic voltammetry
  topic: keywords
subject: surface area assessment
  topic: keywords
creator: Kruthika Manohara Sakamma
creator: Gururaj Kudur Jayaprakash
rights: Copyright (c) 2026 Kruthika Manohara Sakamma, Gururaj Kudur Jayaprakash https://creativecommons.org/licenses/by/4.0
date: 2026-04-04
publication date: 2026-04-04
doi: 10.5599/jese.2973

Synergistic effects of NH2-MIL-101(Fe) metal-organic framework and Pd nanoparticles for sensitive determination of norepine­phrine in the presence of acetaminophen
type: item
description: An electrochemical sensor based on an amino-functionalized iron NH2-MIL-101(Fe) metal-organic framework (MOF)/Pd nanoparticles (NPs) composite-modified screen-printed elec­trode (SPE) is prepared for the simultaneous determination of norepinephrine (NEPI) and acetaminophen (ACP). The NH2-MIL-101(Fe) MOF/Pd NPs/SPE electrochemical sensor shows a significant enhancement in the response peak current of NEPI, as compared to bare SPE. This suggests that the unique features of NH2-MIL-101(Fe) MOF/Pd NPs composite-mo­di­fied SPE improve the electro­catalytic oxidation of NEPI. Such a synergistic effect bet­ween NH2-MIL-101(Fe) MOF and Pd NPs results in a significant enhancement in the res­pon­se, where the MOF's high surface area combines with the high electron-transfer rate and the abundance of catalytically active sites afforded by the Pd NPs. The differential pulse vol­tam­metry (DPV) method was obtained for quantitative determination of NEPI and high sen­sitivity was observed in NEPI determination with the calibration slope of 0.0327, µA µM-1. The developed NH2-MIL-101(Fe) MOF/Pd NPs/SPE sensor presents a low limit of detection of 0.007 µM toward NEPI determination. The developed NH2-MIL-101(Fe) MOF/Pd NPs/SPE sensor shows a good catalytic activity for the oxidation of NEPI and ACP, with anodic peak potentials of 360 and 550 mV, respectively. The separation of anodic peak potential is sufficient to enable simultaneous determination. Finally, the suggested sensing platform has confirmed suitable for the simultaneous determination of NEPI and ACP in real samples (pharmaceutical formulations and urine samples), achieving recovery values ranging from 97.1 to 104.4 % with relative standard deviations ≤3.6 %.
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical sensor
  topic: keywords
subject: screen-printed electrode
  topic: keywords
subject: nanoparticles
  topic: keywords
subject: norepine¬phrine
  topic: keywords
subject: acetaminophen
  topic: keywords
creator: Shaimaa A. Jadoo
creator: Azhar Farooq
creator: Israa M Radhi
creator: Hanadi A. Fadhil
creator: Juman A. Naser
rights: Copyright (c) 2026 Shaimaa A. Jadoo, Azhar Farooq, Israa M Radhi, Hanadi A. Fadhil, Juman A. Naser https://creativecommons.org/licenses/by/4.0
date: 2026-04-03
publication date: 2026-04-03
doi: 10.5599/jese.3189

Parameter selection of cerium oxide anodic electrodeposition on screen-printed carbon electrodes using response surface methodology for nucleic acid based biosensors
type: item
description: Screen-printed carbon electrodes (SPCEs) modified with cerium oxide (ceria) have attracted considerable attention due to their outstanding stability and electrochemical performance, making them promising candidates for sensor and biosensor applications. However, the anodic electrodeposition of ceria on SPCEs involves multiple parameters that may strongly influence film formation and electrochemical behaviour, yet these factors have not been systematically optimized. This study aimed to determine and optimize the key parameters affecting anodic electrodeposition of ceria on SPCEs using cyclic voltammetry (CV) and res­ponse surface methodology. All four main parameters, namely UV irradiation time, distance between the SPCE and UV lamp, cerium nitrate concentration and the number of CV cycles, significantly influence the anodic electrodeposition process of ceria, shown by the statistical analysis (p <0.05). The optimized SPCE/ceria electrode exhibited improved electrochemical performance, with an average peak current of 44.158 μA and a relative standard deviati-on (RSD) of 2.68 %. This optimized SPCE/ceria was subsequently tested for guanine oxide­tion using differential pulse voltammetry with an immobilized RNA probe and produced good repeatability with an RSD value of 2.37 %. The findings underscore the importance of parameter optimization to enhance the reproducibility and sensitivity of SPCE/ceria electrodes, demonstrating their strong potential for future biosensing applications.
subject: Bioelectrochemistry
  topic: section
subject: Ceria layer
  topic: keywords
subject: parameter optimization
  topic: keywords
subject: RNA immobilization
  topic: keywords
subject: guanine oxidation
  topic: keywords
creator: Clianta Yudin Kharismasari
creator: Ari Hardianto
creator: Muhammad Ihda Hamlu Liwaissunati Zein
creator: Salma Nur Zakiyyah
creator: Yeni Wahyuni Hartati
creator: Irkham
rights: Copyright (c) 2026 Clianta Yudin Kharismasari, Ari Hardianto, Muhammad Ihda Hamlu Liwaissunati Zein, Salma Nur Zakiyyah, Yeni Wahyuni Hartati, Irkham https://creativecommons.org/licenses/by/4.0
date: 2026-03-30
publication date: 2026-03-30
starting page: 3077
ending page: 3077
doi: 10.5599/jese.3077

Mango peel extract as a green inhibitor in the corrosion of reinforced concrete
type: item
description: Chloride-induced corrosion of reinforcing steel embedded in concrete is a problem that causes the elements to lose their physical and mechanical properties and can lead to premature failures in civil works. This research article analyses the effectiveness of the green corrosion inhibitor in cement paste through the ethanolic extract of mango peel. The materials were dosed with the inhibitor added to the mixing water and the mechanical properties of the material were analysed by manufacturing cylindrical test specimens. To understand the corrosion phenomena, cubic samples were prepared and immersed in a 3 % sodium chloride (NaCl) solution for 365 days, simulating a highly aggressive chloride-ion environment. Electrochemical techniques such as half-cell potential (HCP), electro­chemical noise (EN), linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) are applied. The experimental results showed that the green corrosion inhibitor reduced the mechanical properties of concrete by 21.28 % compared to the blank, but a positive effect was observed in the corrosion evaluation. Initially, the inhibitor delayed the onset of corrosion, as indicated by high electrochemical noise and linear polarization resistance values due to the formation of a film of organic compounds present in the inhibitor extracts that acted on the active sites on the steel surface.
subject: Corrosion
  topic: section
subject: Reinforcing steel
  topic: keywords
subject: corrosion risks
  topic: keywords
subject: localized corrosion
  topic: keywords
subject: eco-friendly corrosion inhibitor
  topic: keywords
subject: maceration
  topic: keywords
subject: electrochemical techniques
  topic: keywords
creator: Alejandro Flores-Nicolás
creator: Elsa Carmina Menchaca-Campos
creator: Mario Flores-Nicolás
rights: Copyright (c) 2026 Alejandro Flores-Nicolás, Elsa Carmina Menchaca-Campos, Mario Flores-Nicolás https://creativecommons.org/licenses/by/4.0
date: 2026-03-30
publication date: 2026-03-30
doi: 10.5599/jese.2975

Exploring the inhibitory performance of expired moxifloxacin and norfloxacin on copper corrosion in saline environment
type: item
description: The reuse of expired drugs has become a challenge to maintain environmental clean-liness and achieve economic benefit. In this report, two expired drugs, moxifloxacin and norfloxacin, were used as inhibitors for copper corrosion in 3.5 % NaCl solution at different temperatures using several experimental approaches including chemical, electrochemical and spectroscopic techniques. The interaction of these two molecules on the copper surface was also inspected using different adsorption models. Using a dose of 500 mg L-1 of these drugs at 298 K, maximum inhibition efficiencies (IE) of 88.7 and 85.2 % were estimated from the potentiodynamic polarization technique for Mox and Nor, respectively., confirming that they can be considered as promising and effective inhibitors. The IE values were enhanced with increasing drugs doses and reduced with rising temperature. The higher IE is due to the strong adsorption of these molecules on the copper surface and such adsorption is physical in nature and follows the Langmuir adsorption isotherm. This is due to their unique chemical structures as they contain a number of functional groups. Polarization experiments confirmed that the drugs were tuned to behave as mixed-type inhibitors with an anodic predominance. All thermos¬dynamic and kinetic parameters were calculated and discussed in details, and the inhibition mechanism is proposed. All experimental results obtained by different techniques were in agreement with each other.
subject: Corrosion
  topic: section
subject: Metal corrosion
  topic: keywords
subject: salty environment
  topic: keywords
subject: fluoroquinolone antibiotics
  topic: keywords
subject: anti-corrosion properties
  topic: keywords
subject: adsorption
  topic: keywords
creator: Arafat Toghan
creator: Omar K. Alduaij
creator: Azza Attia
creator: Areej Al Bahir
creator: Emad M. Masoud
creator: Hanan Alhussain
creator: Ahmed M. Eldesoky
creator: Ahmed Farag
creator: Ahmed Fawzy
rights: Copyright (c) 2025 Journal of Electrochemical Science and Engineering https://creativecommons.org/licenses/by/4.0
date: 2025-03-09
publication date: 2025-03-09
doi: 10.5599/jese.2646

Porcine gelatine detection via electrochemical immunosensors utilizing green-synthesized cerium oxide nanoparticles from orange peel
type: item
description: Maintaining the safety and proper labelling of food products is vital for communities around the world. One of the primary concerns in food safety is the unintentional presence of porcine derivatives such as gelatine in food products. This issue could affect the labelling accuracy of food products, religious dietary observances, regulatory compliance, and public health. Electrochemical immunosensors address this issue by rapidly, portably, and especially with high sensitivity, detecting porcine gelatine. The electrode was modified with CeO2 nanoparticles (NPs) synthesized via a green method using orange peel extract, which enhanced the immobilization of the bioreceptor on the electrode surface. Orange peel extract contains secondary metabolites that can act as stabilizing agents and prevent agglomeration during the synthesis process. The synthesized CeO2 NPs show a cube morphology, producing an average particle size of 12 nm with 77.31 % crystallinity. The performance of green synthesized CeO2 NPs modified electrode are successful for detecting porcine gelatine in solution and commercialized gelatine product, resulting in a limit of detection of 3.53 ppm. These results show the potential of green-synthesized CeO2 NPs for an electrochemical immunosensor for detecting porcine products.
subject: Bioelectrochemistry
  topic: section
subject: Food ingredient
  topic: keywords
subject: electrochemical sensing
  topic: keywords
subject: screen printed electrode
  topic: keywords
subject: nanoceria
  topic: keywords
subject: plant extract
  topic: keywords
creator: Rafa Radithya Swara
creator: Nazwa Alya Zahra
creator: Dea Hasna Tsary
creator: Biyas Aurora Nania Nevada
creator: Elisabeth Nasya Dominika Setyawati Putri
creator: Salma Nur Zakiyyah
creator: Yohanes Susanto Ridwan
creator: Yeni Wahyuni Hartati
creator: Irkham Irkham
rights: Copyright (c) 2025 Rafa Radithya Swara, Nazwa Alya Zahra, Dea Hasna Tsary, Biyas Aurora Nania Nevada, Elisabeth Nasya Dominika Setyawati Putri, Salma Nur Zakiyyah , Yohanes Susanto Ridwan, Yeni Wahyuni Hartati, Irkham Irkham https://creativecommons.org/licenses/by/4.0
date: 2025-07-31
publication date: 2025-07-31
doi: 10.5599/jese.2698

Carbon paste electrode modified with Bi2WO6 nanosheets and ionic liquid: voltammetric assay of dasatinib in the presence of doxorubicin as two anticancer drugs in pharmaceutical and biological samples
type: item
description: The main goal of this effort is to create an innovative electrochemical sensor for dasatinib detection in the presence of doxorubicin. It was possible to create Bi2WO6 nanosheets easily. The electrochemical performance of the Bi2WO6 nanosheets/ionic liquid modified carbon paste electrode (Bi2WO6/IL/CPE) was examined in relation to dasatinib detection. Additionally, compared to the unmodified electrode, Bi2WO6/IL/CPE demonstrated good electrocatalytic activity for dasatinib oxidation. Under ideal circumstances, the current sensor (Bi2WO6/IL/CPE) was investigated using differential pulse voltammetry (DPV). The results showed a linear dynamic range as wide as 0.1-230.0 μM and a limit of detection of 0.05 μM. Additionally, in well-spaced anodic peaks, the Bi2WO6/IL/CPE sensor showed good analytical efficiency for detecting dasatinib in the presence of doxorubicin. This sensor showed two separate peaks for the oxidation of doxorubicin and dasatinib, per the DPV data. Furthermore, the voltammetric measurement of dasatinib and doxorubicin in biological and pharmaceutical specimens was investigated using the Bi2WO6/IL/CPE.
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical sensor
  topic: keywords
subject: chemically modified electrode
  topic: keywords
subject: real sample analysis
  topic: keywords
subject: chronoamperometry
  topic: keywords
creator: Mayada Hadi Al-qassi
creator: Wisam Hashim Baqer
creator: Abdul Amir H. Kadhum
rights: Copyright (c) 2025 Mayada Hadi Al-qassi, Wisam Hashim Baqer, Abdul Amir H. Kadhum https://creativecommons.org/licenses/by/4.0
date: 2025-10-03
publication date: 2025-10-03
doi: 10.5599/jese.2777

Self-healing efficiency of ceria-doped Zn-Co coatings: Insights into particle-free versus biphasic plating baths
type: item
description: Achieving the superior properties of nanocomposite materials involves addressing several challenges, particularly the agglomeration of nanoparticles in the plating bath. This study focuses on the electrodeposition and characterization of Zn-Co-CeO2 composite coatings using a particle-free plating bath, an effective strategy for mitigating agglomeration. For comparison, the composite coatings were also deposited from a traditional biphasic plating solution. The coatings were deposited galvanostatically at various current densities. Scanning electron microscopy revealed that using a particle-free plating solution in conjunction with lower current densities enhanced the compactness and the overall quality of the coatings. Lower current densities favoured the codeposition of particles, as indicated by energy-dispersive X-ray spectroscopy results. Notably, the coatings produced from the particle-free bath exhibited significantly improved corrosion resistance and durability in chloride-rich environments, attributed to their self-healing properties, as shown by electrochemical impedance spectroscopy.
subject: Electrodeposition and coatings
  topic: section
subject: Zn-Co-CeO2
  topic: keywords
subject: smart nanomaterials
  topic: keywords
subject: self-repair
  topic: keywords
subject: ceria-doping
  topic: keywords
subject: nanocomposite
  topic: keywords
creator: Marija Mitrović
creator: Anđela Simović
creator: Regina Fuchs-Godec
creator: Milorad Тоmić
creator: Jelena Bajat
rights: Copyright (c) 2024 Journal of Electrochemical Science and Engineering https://creativecommons.org/licenses/by/4.0
date: 2024-10-26
publication date: 2024-10-26
doi: 10.5599/jese.2522

Improved performance of nitrate extended gate field effect transistor sensor through deposition of polymer layer at various withdrawal speeds using dip coating method
type: item
description: In this study, a nitrate Extended Gate Field Effect Transistor (EGFET) sensor has been deposited with polyaniline (PANI) using a dip coating method by varying the withdrawal speed parameter at a range of 1 to 7 mm/s to improve the detection and stability of the sensor that uses zinc oxide (ZnO) as a sensing material, which lacks sensitivity and stability in detecting nitrate. The sensor was characterized by analysing its surface morphology, light absorption, and wettability level. The sensitivity and linearity of the sensors were evaluated using EGFET measurements, which showed that the threshold voltage changes when the sensor interacts with the analyte. The results obtained by comparing ZnO/indium tin oxide film and PANI/ZnO film show that PANI helps to improve sensor performance, and the best parameter setup to deposit PANI was at 2 mm/s withdrawal speed, resulting in a super-Nernstian response with a high sensitivity of 78.90 mV/dec and close to 1 linearity. The film showed excellent long-term stability in detecting nitrate in a 50-ppm nitrate solution, with the lowest drift rate at 0.1278 V/h. The dip coating method, using a 2 mm/s withdrawal speed, appears to be effective for fabricating PANI as a polymer layer for nitrate sensors.
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical sensor
  topic: keywords
subject: potentiometry
  topic: keywords
subject: zinc oxide/polyaniline bilayer
  topic: keywords
subject: surface wettability
  topic: keywords
subject: nitrate monitoring
  topic: keywords
creator: Nor Farhana Abdullah
creator: Robaiah Mamat
creator: Akmal Mustaffa Zulhakim
creator: Maria Merlyne De Souza
creator: Azrif Manut
creator: Wan Fazlida Hanim Abdullah
rights: Copyright (c) 2025 Journal of Electrochemical Science and Engineering https://creativecommons.org/licenses/by/4.0
date: 2025-03-26
publication date: 2025-03-26
doi: 10.5599/jese.2670

Electrodeposition of Ni-Co thin films from ammonia-chloride electrolyte
type: item
description: This study presents the research results on the co-deposition of nickel and cobalt from an alkaline electrolyte containing glycine. For this purpose, cyclic and linear polarization curves of co-deposition were obtained at various cobalt concentrations, different poten-tial sweep rates, and electrolyte temperatures. It was established that the co-deposition process occurs anomalously, with the cobalt content in the deposited films exceeding that of nickel. The deposits obtained under optimal conditions contained 37.25 % Ni and 51.43 % Co. The study of the effect of the potential sweep rate on the co-deposition process of nickel and cobalt revealed a linear relationship between the current peak value and the square root of the potential sweep rate. This indicates that the initial stage of Ni-Co co-deposition is controlled by the diffusion of the metal ions to the cathode surface. When recording polarization curves on a rotating disk electrode at different rotation speeds, the relationship between the current peak value and the square root of the electrode rotation speed was also linear at relatively low rotation speeds. However, at higher rotation speeds, the process was controlled by electrochemical polarization. The co-deposition of Ni with Co was confirmed through X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses. The investigation of the catalytic activity of Ni-Co deposits in a neutral medium (0.5 M Na₂SO₄) demonstrated that the amorphous thin films, not subjected to annealing, exhibited the best electrocatalytic properties for the hydrogen evolution reaction. The Tafel slope was determined to be 118 mV dec-1.
subject: Electrodeposition and coatings
  topic: section
subject: Cobalt-nickel alloy
  topic: keywords
subject: co-deposition
  topic: keywords
subject: alkaline-glycine electrolyte
  topic: keywords
subject: hydrogen evolution
  topic: keywords
subject: electrocatalysis
  topic: keywords
creator: Aygun Oruj Zeynalova
creator: Natavan Sharafaddin Soltanova
creator: Ulviyya Magsud Gurbanova
creator: Ruhangiz Gurmuz Huseynova
creator: Akif Shikhan Aliyev
creator: Dilgam Babir Tagiyev
rights: Copyright (c) 2025 Aygun Oruj Zeynalova, Natavan Sharafaddin Soltanova, Ulviyya Magsud Gurbanova, Ruhangiz Gurmuz Huseynova, Akif Shikhan Aliyev, Dilgam Babir Tagiyev https://creativecommons.org/licenses/by/4.0
date: 2025-04-01
publication date: 2025-04-01
doi: 10.5599/jese.2666

Influence of irradiation treatment on sensing performances of screen-printed electrodes aimed for doxorubicin monitoring
type: item
description: The subject of study is the development of nanosensors based on carbon nanotubes (CNTs) and polyaniline (PANI) aimed at effective detection and monitoring of doxorubicin - a chemotherapy drug used in the treatment of different types of cancer. The main goal is the design of nanosensors that provide precise and reliable detection and monitoring of doxorubicin, providing an effective approach to monitor drug levels during treatment. The research was carried out on the screen-printed electrodes (SPE) with a working electrode of commercial CNTs and PANI and their modification by irradiation with electron irradiation (50 kGy). The structural changes resulting from the e-beam irradiation were observed by scanning electron microscopy, Raman and FTIR spectroscopy, and thermogravimetric analysis. An electrochemical study employing cyclic voltammetry was done to characterize and test the performance of the nanosensors. Modification with electron irradiation was shown as an effective approach to improve the sensing characteristics of the studied SPE, resulting in a lower limit of detection for the modification. The irradiated SPEs exhibit a limit of detection of 12.674 µmol L⁻¹ for the modified multi-walled CNT (MWCNT) electrode and 12.712 µmol L⁻¹ for the modified PANI electrode, compared to 12.773 µmol L⁻¹ for the MWCNT and 12.712 µmol L⁻¹ for the PANI commercial electrodes.
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical nanosensors
  topic: keywords
subject: carbon nanotubes
  topic: keywords
subject: polyaniline
  topic: keywords
subject: e-beam irradiation
  topic: keywords
creator: Perica Paunović
creator: Iva Dimitrievska
creator: Marija Katerina Paunović
creator: Marija Mitevska
creator: Anita Grozdanov
rights: Copyright (c) 2025 Perica Paunović, Iva Dimitrievska, Marija Katerina Paunović, Marija Mitevska, Anita Grozdanov https://creativecommons.org/licenses/by/4.0
date: 2025-03-28
publication date: 2025-03-28
doi: 10.5599/jese.2656

Correlation between diffusion and kinetic behaviour of metal hydride battery: voltammetry and impedance analyses
type: item
description: The performance of metal hydride batteries depends on their electrochemical and kinetic behaviour, which varies with the state of charge (SoC). This study explores these characteristics in nickel-metal hydride batteries with A2B7 and AB5 electrodes, focusing on how SoC influences ion diffusion and charge transfer kinetics of the batteries. Electro¬chemical impedance spectroscopy and cyclic voltammetry (CV) were used to analyse these behaviours, while X-ray diffraction provided structural insights and scanning electron microscopy proposed morphological concepts. Results reveal a positive correlation between SoC and both diffusion and kinetic behaviour. The value of fitting resistances decreases as SoC increases, reaching a minimum at 100 % SoC, where hydrogen diffusion is optimized. CV data supports this phenomenon, showing a more negative peak cathodic current (Ip,c) at higher SoC, indicating improved kinetics likely due to enhanced ion availability. Additionally, voltage window analysis showed maximum hydrogen storage at 100 % SoC for AB5 and 50 % for A2B7. Structurally, larger particle sizes and crystallites at higher SoC correlate with increased hydrogen desorption capacity. A2B7 exhibited superior diffusion kinetics, while AB5 demonstrated better discharge behaviour, highlighting how SoC-dependent diffusion and kinetics impact Ni-MH performance.
subject: Batteries and supercapacitors
  topic: section
subject: State of charge
  topic: keywords
subject: hydrogen storage alloys
  topic: keywords
subject: performance analysis
  topic: keywords
subject: Nyquist plots
  topic: keywords
subject: voltage window
  topic: keywords
creator: Ika Dewi Wijayanti
creator: Delia Salsabila Putri
creator: Farhan Dzikriansyah
creator: Indra Sidharta
creator: Sutikno Sutikno
rights: Copyright (c) 2025 Ika Dewi Wijayanti, Delia Salsabila Putri, Farhan Dzikriansyah, Indra Sidharta, Sutikno Sutikno https://creativecommons.org/licenses/by/4.0
date: 2025-04-14
publication date: 2025-04-14
doi: 10.5599/jese.2655

Improving the corrosion behaviour of Zn-Ni alloy coatings on 316 SS from chloride-sulfate bath by addition of triethanolamine or sucrose
type: item
description: Corrosion of Zn-Ni alloy coatings on stainless steel 316 SS in a chloride-sulfate bath with the addition of either triethanolamine or sucrose was examined. A constant cathode potential was used to deposit zinc-nickel alloys, while cyclic voltammetry and potentio-dynamic polarization were used to measure corrosion. In addition, scanning electron microscopy was utilized to analyse Zn-Ni alloy coating surface layers formed with¬out and with additives. The outcomes discovered that the corrosion resistance of Zn-Ni alloy coat¬ings in 3.5 % NaCl solution was highly influenced by adding triethanolamine or sucrose. Decreasing the Zn:Ni molar ratio led to an increase in corrosion resistance. All Zn-Ni alloy coatings were superior to pure Zn coating in their corrosion behaviour. The best result was found for potentiostatic electrodeposition of Zn-Ni alloy at the cathodic potential of -1.3 V vs. Ag/AgCl for 20 minutes in the presence of 0.335 M triethanolamine from a solution containing 0.02 M ZnCl2, 0.1 M NiSO4, 0.4 M H3BO4 and 1 M Na2SO4. For this Zn-Ni coating, a low corrosion rate of 0.00795 mm year-1 was observed at Ecorr = -0.5 V vs. Ag/AgCl and icorr= 0.535 µA cm-2. Scanning electron microscopy confirmed that this alloy has a granular structure with no cracks and a less porous structure. The new Zn-Ni alloy is superior in its properties in terms of corrosion resistance compared with those obtained in previous studies.
subject: Corrosion
  topic: section
subject: Corrosion resistance
  topic: keywords
subject: Zn-Ni alloy
  topic: keywords
subject: Electrodepositing
  topic: keywords
subject: Triethanolamine
  topic: keywords
subject: Sucrose
  topic: keywords
subject: SEM
  topic: keywords
creator: Mothana Ghazi Kadhim Alfalah
creator: Ali H. Abbar
creator: Fatma Kandemirli
rights: Copyright (c) 2025 Mothana Ghazi Kadhim Alfalah, Ali H. Abbar, Fatma Kandemirli https://creativecommons.org/licenses/by/4.0
date: 2025-04-02
publication date: 2025-04-02
doi: 10.5599/jese.2607

Immobilized triton X-100 voltammetric sensor for the simultaneous detection of sunset yellow and tartrazine
type: item
description: In this study, we developed a sensor utilizing a pencil graphite electrode combined with triton X-100 surfactant prepared by immobilization technique. This modified electrode can concurrently detect sunset yellow (SY) and tartrazine (TZ) in a binary mixture. Both com¬pounds are synthetic azo dyes known to have hazardous effects on human health, including the potential for malignant growth at prolonged exposure. The modified electrode shows remarkable sensitivity toward SY and TZ individually and in combination. We conducted pH studies, scan rate analysis, reproducibility tests, and simultaneous detection studies using cyclic voltammetry. Differential pulse voltammetry technique was used to investigate concentration and mutual interference effects. Our pH study found that the maximum anodic peak current for SY occurs at pH 7.4, while TZ shows a higher current at pH 7.0. The scan rate analysis indicated that anodic reactions of both dyes are adsorption process controlled. The limit of detection (LOD) and limit of quantification (LOQ) for SY are 0.17 and 0.59 µM, respectively, while for TZ, the LOD and LOQ are 0.67 and 2.26 µM, respectively. The surfactant-modified pencil electrode demonstrates excellent peak separation between SY and TZ in a binary mixture, exhibiting stability of 86.3 % for sunset yellow and 65 % for tartrazine over 25 cycles.
subject: Electroanalytical chemistry
  topic: section
subject: Synthetic azo dyes
  topic: keywords
subject: binary mixture
  topic: keywords
subject: non-ionic surfactant
  topic: keywords
subject: immobilization method
  topic: keywords
creator: Puneeth
creator: B. E. Kumara Swamy
creator: S. C. Sharma
rights: Copyright (c) 2025 Puneeth, B. E. Kumara Swamy, S. C. Sharma https://creativecommons.org/licenses/by/4.0
date: 2025-04-01
publication date: 2025-04-01
doi: 10.5599/jese.2589

Comparative voltammetric determination of ascorbic acid at three different carbon electrodes: application of carbon screen-printed electrode for citrus fruits analysis
type: item
description: Determining the vitamin C (ascorbic acid) content in citrus fruits is crucial for dietary and nutritional considerations. Traditional analytical methods for ascorbic acid analysis often involve expensive and less portable electrodes, limiting their practicality in food analysis. This study focuses on the quantification of ascorbic acid in citrus fruits using a cost-effective and portable carbon screen-printed electrode. The efficiency of these electrodes was assessed using cyclic voltammetry and linear sweep voltammetry due to the irreversible oxidation behavior of ascorbic acid. A comparative analysis was performed with glassy carbon, carbon paste, and commercial carbon screen-printed electrodes, focusing on sensi¬tivity variations based on analyte concentration and scanning rate. The carbon screen-printed electrode demonstrated superior sensitivity to the other electrodes tested, establishing it as a practical alternative for ascorbic acid analysis in citrus fruits. This study employed the standard addition method in conjunction with linear sweep voltam¬metry to accurately determine ascorbic acid concentrations in pear-orange, Tahiti lemon, and Ponkan tangerine samples. The obtained values were cross-referenced with existing literature data, enhancing our understanding of vitamin C content in these citrus fruits. Overall, this research highlights the potential of the carbon screen-printed electrode as a valuable tool for vitamin C analysis, offering new insights into food science and nutrition.
subject: Electroanalytical chemistry
  topic: section
subject: Vitamin C
  topic: keywords
subject: carbon electrodes
  topic: keywords
subject: voltammetry techniques
  topic: keywords
subject: standard addition method
  topic: keywords
subject: juice samples
  topic: keywords
creator: Talytha Rodrigues Gaspari Paina
creator: Izabel Cristina Eleotério
creator: Nelson Ramos Stradiotto
creator: Marcelo Firmino de Oliveira
rights: Copyright (c) 2025 Journal of Electrochemical Science and Engineering https://creativecommons.org/licenses/by/4.0
date: 2025-03-03
publication date: 2025-03-03
doi: 10.5599/jese.2262

Label-free electrochemical immunosensor for porcine gelatin using a boron-doped diamond electrode via diazonium salt electrografting
type: item
description: Porcine gelatin is widely used in the food and pharmaceutical industries due to its favorable functional properties and low cost. However, its presence in consumer products raises serious concerns for individuals with dietary restrictions based on religious, ethical, or health considerations. In this study, a label-free electrochemical immunosensor was developed using a boron-doped diamond electrode modified with aryl diazonium salt for the selective and sensitive detection of porcine gelatin. The diazonium electrografting enabled stable covalent immobilization of anti-porcine gelatin antibodies via protein A, preserving anti­body orientation and activity. Experimental parameters were optimized using the Box-Behnken design, yielding ideal conditions of 500× antibody concentration, 60 min antibody incubation, and 15 min gelatin incubation. Detection was performed using differential pulse voltammetry with [Fe(CN)₆]3-/4- as a redox probe, allowing label-free monitoring of anti­body-antigen interactions based on changes in current. The immunosensor demonstrated excellent analytical performance, with a detection limit of 142.15 pg mL-1. Specificity testing confirmed that the sensor responds exclusively to porcine gelatin, showing no cross-reactivity with bovine gelatin. These results demonstrate that the proposed immunosensor provides a rapid, highly sensitive, and specific platform for porcine gelatin detection, offering great potential for food authentication and halal verification.
subject: Bioelectrochemistry
  topic: section
subject: Modified diamond electrode
  topic: keywords
subject: diazonium derived film
  topic: keywords
subject: pork skin gelatin
  topic: keywords
subject: food authentication
  topic: keywords
creator: Irkham Irkham
creator: Fadli Taufik Abdillah
creator: Muhammad Ihda H. L. Zein
creator: Adisyahputra
creator: Nazwa Alya Zahra
creator: Salma Nur Zakiyyah
creator: Yeni Wahyuni Hartati
rights: Copyright (c) 2025 Irkham Irkham, Fadli Taufik Abdillah, Muhammad Ihda H. L. Zein, Adisyahputra, Nazwa Alya Zahra, Salma Nur Zakiyyah, Yeni Wahyuni Hartati https://creativecommons.org/licenses/by/4.0
date: 2025-06-09
publication date: 2025-06-09
doi: 10.5599/jese.2720

Electrochemical modulation of annealed steel via cupric sulfate, potassium chloride and trisodium citrate: insights into redox behaviour and corrosion resistance
type: item
description: This study probes the electrochemical modulation of annealed steel in 0.01 M copper sulfate (CuSO₄) solutions with potassium chloride (KCl) and trisodium citrate additives, using cyclic voltammetry, electrochemical impedance spectroscopy and chronoamperometry. A three-electrode system, annealed steel wire, Ag/AgCl reference and Pt counter electrode, evaluated pure CuSO₄, CuSO₄ with 0.01 M KCl and CuSO₄ with 0.01 M trisodium citrate. KCl amplifies current density by 123 % and reduces charge transfer resistance by 75 % at -0.8 V vs. Ag/AgCl, enhancing copper electrodeposition kinetics. Trisodium citrate, forming Cu²⁺ complexes, curtails redox activity by 51 % and elevates polarization resistance at -0.6 V, fostering passivation. Measurements at -0.6 and -0.8 V highlight kinetic dominance of KCl and stabilizing effect of citrate ions, slashing corrosion rates from 154.87 to 8.05 mm year-1. These insights make a framework for corrosion-resistant coatings without reliance on structural imaging, with broad implications for electrochemical applications.
subject: Corrosion
  topic: section
subject: Electrolysis
  topic: keywords
subject: morphology
  topic: keywords
subject: crystal orientation
  topic: keywords
subject: scanning electron microscopy
  topic: keywords
subject: -ray diffraction
  topic: keywords
creator: Francisco Augusto Nuñez Perez
rights: Copyright (c) 2025 Francisco Augusto Nuñez Pérez https://creativecommons.org/licenses/by/4.0
date: 2025-04-29
publication date: 2025-04-29
doi: 10.5599/jese.2627

Green inhibitor for corrosion protection of ASTM A1011 steel in saline medium using a dynamic system
type: item
description: Currently, inhibitors represent an economical option for protecting metals against corrosion. However, most inhibitors are synthetic and harmful to the environment. The present study focuses on estimating the anticorrosive effect of Oreocallis grandiflora extract (OGE) on ASTM A1011 steel immersed in a 3.5 wt.% NaCl solution. The investigation was carried out using open circuit potential (OCP) and potentiodynamic polarization curves to different concentrations of OGE in saline solution using a dynamic system. The results of potentiodynamic polarization curves indicated that the corrosion rate of ASTM A1011 steel decreased as the OGE concentration was increased. This inhibitor demonstrated an efficiency of 64 to 88 % in enhancing the corrosion resistance of the steel substrates. The value of the free energy of adsorption was -23.59 kJ mol-1, indicating that the OGE molecules are spontaneously adsorbed onto the surface of the substrate. The results of this study showed that Oreocallis grandiflora extract has high potential as a green corrosion inhibitor, as it forms a barrier between the substrate and the corrosive solution.
subject: Corrosion
  topic: section
subject: Oreocallis grandiflora extract
  topic: keywords
subject: eco-friendly inhibitor
  topic: keywords
subject: steel sheets
  topic: keywords
subject: corrosion resistance
  topic: keywords
subject: adsorption isotherm
  topic: keywords
creator: Harold Ames
creator: Karen Tufinio
creator: Karin Paucar
creator: Jesus M. Falcón
creator: Abel Vergara
rights: Copyright (c) 2025 Harold Ames, Karen Tufinio, Karin Paucar, Jesus M. Falcón, Abel Vergara https://creativecommons.org/licenses/by/4.0
date: 2025-09-30
publication date: 2025-09-30
doi: 10.5599/jese.2860

Integrated bio-electro-Fenton approach for efficient removal of the antiviral sofosbuvir in aqueous medium: kinetics, parameters optimization, mineralization pathway, and biodegradability enhancement
type: item
description: The accumulation of antiviral drugs, such as sofosbuvir (SOF), in aquatic environments raises growing concerns due to their persistence and potential ecological risks. This study addresses the need for effective degradation strategies by investigating the homogeneous electro-Fenton (EF) process in a Pt/carbon felt cell for the degradation and mineralization of SOF in an aqueous medium. A Box-Behnken design (BBD) was employed to optimize key operational parameters, including initial Fe2+ concentration, current intensity, and initial SOF concentration, targeting chemical oxygen demand (COD) removal as the main response. The model showed excellent predictability (R2 = 0.99), and the optimal conditions were identified as 400 mA current intensity, CSOF-0 = 0.1 mM, and CFe2+-0 = 0.1 mM. Under these conditions, 97% of SOF was degraded within 5 min, while complete mineralization was achieved within 5 h. Biodegradability tests revealed an increase in the BOD5/COD ratio to 0.41 after 2 h of electrolysis, indicating that the EF process can be effectively coupled with a biological treatment. The combined bio-electro-Fenton (bio-EF) approach successfully achieved complete mineralization, offering a cost-effective and sustainable strategy for the removal of recalcitrant pharmaceutical pollutants from water.
subject: Electrochemical Engineering
  topic: section
subject: Degradation
  topic: keywords
subject: Box-Behnken design
  topic: keywords
subject: hydroxyl radicals
  topic: keywords
subject: biological treatment
  topic: keywords
creator: Abdelkader Zarrouk
creator: Amine Asserghine
creator: Clément Trellu
creator: Miloud El Karbane
creator: Fouad Echerfaoui
creator: Ghizlan Kaichouh
rights: Copyright (c) 2025 Abdelkader Zarrouk, Amine Asserghine, Clément Trellu, Miloud El Karbane, Fouad Echerfaoui, Ghizlan Kaichouh https://creativecommons.org/licenses/by/4.0
date: 2025-09-29
publication date: 2025-09-29
doi: 10.5599/jese.2824

Electrochemical and adsorption study of environmentally friendly inhibitor used for low carbon steel
type: item
description: Low-carbon steel is susceptible to corrosion in various technical applications, particularly in the petroleum industry. Typically, classic approaches like coatings have downsides, include­ing toxicity and environmental issues. Plant-based corrosion inhibitors are emerging as new, green, and affordable corrosion preventatives. In this study, an inhibitor of Portulaca oleracea roots was extracted and added in different concentrations of 200, 400, 600, 800 and 1000 ppm to study the adsorption mechanism at low carbon steel in 3.5 % NaCl. The effectiveness of inhibition and the rate of corrosion were assessed by using the potentio­metric polarization method. Corrosion rate measurements showed a decrease from 0.149 to 0.021 mm year-1, respectively, and the maximum efficiency of 85.7 % was obtained at 1000 ppm of Portulaca oleracea extract. The data were tested for Langmuir, Flory-Huggins, El-Awady and Freundlich isotherms, and the Langmuir isotherm provided the best fit, indicating that the layer of inhibitor formed on the metal surface is a monolayer. According to the findings, the extract of Portulaca oleracea is very effective for suppressing corrosion of low-carbon steel in a 3.5 % NaCl solution.
subject: Corrosion
  topic: section
subject: Mild steel
  topic: keywords
subject: green corrosion inhibitor
  topic: keywords
subject: Portulaca oleracea extract
  topic: keywords
subject: corrosion rate
  topic: keywords
subject: Langmuir adsorption isotherm
  topic: keywords
creator: Sami A. Ajeel
creator: Zamen Karm
creator: Basheer A. Abdulhussein
rights: Copyright (c) 2025 Sami A. Ajeel, Zamen Karm, Basheer A. Abdulhussein https://creativecommons.org/licenses/by/4.0
date: 2025-09-22
publication date: 2025-09-22
doi: 10.5599/jese.2612

Design, fabrication and functional properties of titanium suboxide-based composites with low noble metal content for electrocatalytic applications
type: item
description: Fabrication, design and investigation of functional properties of composite materials based on titanium suboxides with low noble metal content for use in electrocatalysis has been investigated. The study particularly focuses on electrode coatings derived from titanium dioxide modified with platinum and palladium. The structural, electrocatalytic, and corrosion-resistant properties of these materials were systematically investigated. It was demonstrated that thermal treatment significantly enhances the catalytic efficiency of the coatings by reducing the oxygen evolution overpotential and improving the efficiency of hypochlorite synthesis. Optimal thermal treatment conditions (500 °C, 3 hours) were identi­fied, resulting in increased stability of the anodes containing Pt and Pd layers, as evidenced by a service life of 176 hours. The study highlights the potential of these composites for applications in oxygen evolution reactions and hypochlorite synthesis, owing to their high stability, selectivity, and cost-effectiveness.
subject: Electrocatalysis
  topic: section
subject: Titanium composites
  topic: keywords
subject: precious metals
  topic: keywords
subject: semiconducting properties
  topic: keywords
subject: electrocatalysts
  topic: keywords
subject: oxygen evolution reaction
  topic: keywords
subject: hypochlorite synthesis
  topic: keywords
creator: Valentina Knysh
creator: Heorhii Zhemela
creator: Olesia Shmychkova
creator: Tatiana Luk'yanenko
creator: Alexander Velichenko
rights: Copyright (c) 2025 Valentina Knysh, Heorhii Zhemela, Olesia Shmychkova, Tatiana Luk'yanenko, Alexander Velichenko https://creativecommons.org/licenses/by/4.0
date: 2025-09-17
publication date: 2025-09-17
doi: 10.5599/jese.2708

Particle velocity effects on erosion-corrosion of AISI 1020 carbon steel in CO₂-saturated drilling mud
type: item
description: A systematic approach was adopted to independently assess erosion, corrosion, and their combined effects under controlled flow conditions that closely mimic real drilling environ­ments. This study offers in-depth insight into how increasing flow velocities alter the pre­va­iling degradation mechanism, transitioning from corrosion-dominated behaviour at lower speeds to erosion-driven processes at higher speeds. The effect of particle velocity on the erosion-corrosion behaviour of AISI 1020 carbon steel was investigated in a CO₂-sa­turated, water-based drilling mud containing 3.5 wt.% NaCl and 500 mg L-1 of sand particles (400 to 500 μm in size). Experiments were conducted using a custom jet impingement flow loop at velocities ranging from 5 to 20 m s-1. Degradation rates and surface deterioration were evaluated through total weight loss measurements and detailed analysis using scanning electron microscopy. The results demonstrate a substantial increase in material loss as flow velocity rises, with degradation rates exceeding 20 mm year-1 at 20 m s-1. The synergistic interaction between erosion and corrosion was most evident at lower velocities, whereas erosion alone became predominant at higher velocities. Independent erosion and corrosion tests confirmed that the material loss was caused by the combined influence of mechanical impact and electrochemical reactions. These findings emphasize that synergy decreases with increasing velocity, highlighting the transition from corrosion-assisted erosion to erosion-dominated degradation. The results provide critical insight into the velocity-dependent mechanisms of erosion–corrosion and reinforce the need for velocity management strategies to extend the service life of steel components in drilling operations.
subject: Corrosion
  topic: section
subject: Slurry flow
  topic: keywords
subject: mass loss
  topic: keywords
subject: surface morphology
  topic: keywords
subject: plastic deformation
  topic: keywords
subject: particle impingement
  topic: keywords
creator: Khalid A. Mohammed
rights: Copyright (c) 2025 Khalid A. Mohammed https://creativecommons.org/licenses/by/4.0
date: 2025-09-18
publication date: 2025-09-18
doi: 10.5599/jese.2957

Development of non-invasive genosensor to diagnose pancreatic cancer using miRNA-196a
type: item
description: This work presents the development of a diagnostic device for pancreatic cancer, one of the deadliest malignancies worldwide. The circulating pancreatic cancer biomarker miRNA-196a was utilized for the development of an electrochemical genosensor due to its stability in biological fluids. Immobilized single-stranded DNA conjugated with gold nanoparticles establishes a sensitive platform for the electrochemical detection of miRNA-196a. The sensor performance was evaluated for probe DNA-miRNA hybridization at optimum temperature (55 °C) using cyclic voltammetry and chronocoulometric techniques, achieving sensitivities of 51.10 µA pg-1 mL cm-2 and 18.28 µC pg-1 mL cm-2, respectively. The device exhibited a wide linear detection range of miRNA-196a from 14.9 aM to 14.9 nM. To the best of our knowledge, for already developed PDAC biosensors using a single biomarker or a panel of biomarkers, the widest detection range for miRNA-196a was reported as 0.05 fM to 50 pM by Guo et al. in 2018. Hence, the developed genosensor, having a detection limit of 14.9 aM and a wide detection range, may prove to be a promising tool in detecting pancreatic cancer at an early stage, and hence improve patient outcomes.
subject: Bioelectrochemistry
  topic: section
subject: DNA biosensor
  topic: keywords
subject: gold nanoparticles
  topic: keywords
subject: hybridization
  topic: keywords
subject: cyclic voltammetry
  topic: keywords
subject: chronocoulometry
  topic: keywords
subject: limit of detection
  topic: keywords
creator: Namita Sharma
creator: Sudha Srivastava
rights: Copyright (c) 2025 Namita Sharma, Sudha Srivastava https://creativecommons.org/licenses/by/4.0
date: 2025-09-15
publication date: 2025-09-15
doi: 10.5599/jese.2807

Electrochemical determination of paracetamol and chlorpheniramine using AuNPs-rGO modified glassy carbon electrode
type: item
description: One of the significant durability challenges is the corrosion of reinforced concrete. A gold nanoparticle/reduced graphene oxide modified glassy carbon electrode (AuNPs-rGO-GCE) was fabricated using an electrochemical reduction method for the simultaneous determination of paracetamol (PAR) and chlorpheniramine maleate (CPM). AuNPs-rGO modified GC electrodes were prepared through direct electrochemical reduction of GO to rGO, followed by direct reduction of Au ions to Au on the rGO matrix. X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectra, Raman spectroscopy, energy dispersive X-ray spectroscopy, high-resolution transmission electron microscopy, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy characterized the resulting AuNPs-rGO. It was found that AuNPs around 15.4 nm were highly dispersed on the rGO. The modification of GCE by AuNPs-rGO accelerates the electron transfer process and increases the conductivity of the electrode. The AuNPs-rGO modified electrode was used to simultaneously determine PAR and CPM using the square-wave anodic stripping voltammetry (SQW-ASV) method. Under suitable experimental conditions, the SQW-ASV method using AuNPs-rGO-GCE showed a wide linear range from 23.7 to 140.0 µM for PAR and from 7.5 to 54.0 µM for CPM. The limit of detection of PAR and CPM was 7.12 and 2.54 µM, respectively. The proposed SQW-ASV method was applied to analyze PAR and CPM in samples of herbal medicine simultaneously, and the results were compared with those of high-performance liquid chromatography, with no statistical difference.
subject: Electroanalytical chemistry
  topic: section
subject: Drug sensors
  topic: keywords
subject: square-wave anodic stripping voltammetry
  topic: keywords
subject: ochemically reduced graphene oxide
  topic: keywords
subject: herbal medicine
  topic: keywords
creator: Huynh Van Chung
creator: Nguyen Hai Phong
creator: Dao Thi Cam Minh
creator: Ho Xuan Anh Vu
creator: Pham Khac Lieu
creator: Nguyen Thi Thanh Huyen
creator: Trinh Ngoc Dat
creator: Doan Manh Dung
creator: Do Thi Duyen
creator: Dinh Quang Khieu
rights: Copyright (c) 2025 Huynh Van Chung, Nguyen Hai Phong, Dao Thi Cam Minh, Ho Xuan Anh Vu, Pham Khac Lieu, Nguyen Thi Thanh Huyen, Trinh Ngoc Dat, Doan Manh Dung, Do Thi Duyen, Dinh Quang Khieu https://creativecommons.org/licenses/by/4.0
date: 2025-08-25
publication date: 2025-08-25
doi: 10.5599/jese.2841

Application of a cobalt(II) coordination complex in the electrochemical detection and quantification of adrenaline
type: item
description: Adrenaline, also known as epinephrine, is a hormone and neurotransmitter produced by the adrenal glands. In the bloodstream, adrenaline affects vital physiological functions such as heart rate, blood pressure and glycogen breakdown. Abnormal adrenaline levels can indicate underlying health disorders, with increases often seen in emotional or physical stress and diseases such as cancer and Parkinson's disease. Electrochemical methods are effective for detecting neurotransmitters, as they are fast-responding, easy to use, and highly sensitive. In this context, a novel electrochemical sensor has been developed for the precise and selective detection of adrenaline. The sensor, based on a glassy carbon electrode modified with a cobalt(II) coordination complex, showed improved electrochemical performance for adrenaline detection, with a linear response range of 0.1 to 2.0 μM, a detection limit of 0.09 μM, and a sensitivity of 26.92 nA μM-1. When analysing real samples, the modified electrode showed favourable electroanalytical properties for the oxidation of adrenaline and demonstrated stability, reproducibility and suitability for use in pharmaceutical formulations. The selectivity of the sensor was confirmed by interference studies, which showed negligible response changes in the presence of common interferents, except for ascorbic acid (vitamin C).
subject: Electroanalytical chemistry
  topic: section
subject: Electrochemical sensor
  topic: keywords
subject: epinephrine
  topic: keywords
subject: modified glassy carbon
  topic: keywords
subject: metal ion complex
  topic: keywords
subject: pharmaceutical sample
  topic: keywords
creator: Marijo Buzuk
creator: Ivana Škugor Rončević
creator: Nives Vladislavić
creator: Josipa Dugeč
rights: Copyright (c) 2025 Ivana Škugor Rončević, Marijo Buzuk, Nives Vladislavić, Josipa Dugeč https://creativecommons.org/licenses/by/4.0
date: 2025-07-25
publication date: 2025-07-25
doi: 10.5599/jese.2828

Electrochemical micromachining of galvanized iron sheets: process optimization and performance evaluation
type: item
description: Electrochemical micromachining (ECMM) is a promising non-traditional technique for fabricating micro-features on conductive materials with high precision and minimal thermal effects. This study focuses on the ECMM of galvanized iron (GI) sheets using sodium nitrate (NaNO3) as the electrolyte. Key process parameters such as voltage, duty cycle, and electrolyte concentration were optimized to improve machining performance in terms of material removal rate (MRR) and overcut (OC). An L9 orthogonal array was used to design the experiments, and signal-to-noise ratio, along with analysis of variance (ANOVA), was employed to identify the most influential parameters. Results showed that voltage signi­ficantly influenced both MRR and OC, with optimal MRR observed at 12 V, 70 % duty cycle, and 20 g l-1 NaNO3 concentration. Conversely, the minimum OC was achieved at 6 V, 50 % duty cycle and 10 g l-1 NaNO3 electrolyte concentration. SEM analysis confirmed over-etched boundaries at higher voltage and well-defined micro-holes at lower voltage. This research demonstrates the critical role of parameter tuning in enhancing the quality and precision of ECMM on GI sheets.
subject: Electrochemical Engineering
  topic: section
subject: Galvanized steel
  topic: keywords
subject: electrochemical material removal
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subject: machining parameters
  topic: keywords
subject: removal rate
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subject: overcut
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creator: Nadanasabapathi Sivashankar
creator: Kadhiresan Santhanam
creator: Shikandar Prasad
creator: Mamidala Jawahar
creator: Rajasekaran Thanigaivelan
rights: Copyright (c) 2025 Nadanasabapathi Sivashankar, Kadhiresan Santhanam , Shikandar Prasad , Mamidala Jawahar , Rajasekaran Thanigaivelan https://creativecommons.org/licenses/by/4.0
date: 2025-07-31
publication date: 2025-07-31
doi: 10.5599/jese.2821

Fabrication of a sensitive electrochemical sensor based on CuS-modified carbon paste electrode for hydrazine analysis in water samples
type: item
description: A new electrochemical sensor based on a CuS-modified carbon paste electrode (CPE) was fabricated for the determination of hydrazine. In comparison with the bare CPE, the CuS-modified electrode significantly enhanced the electrooxidation performance of hydrazine by reducing the oxidation overpotential and increasing the oxidation peak current. Differential pulse voltammetry was used as the analytical method for the quantitative determination of hydrazine. The anode peak current was linearly related to hydrazine concentrations between 0.06 and 270.0 μM with a detection limit of as little as 0.02 μM. The sensor modification also showed good stability, reproducibility, and sensitivity. In addition, experimental results demonstrated the reliability and effectiveness of the sensor in determining hydrazine in various types of water samples.
subject: Electroanalytical chemistry
  topic: section
subject: Differential pulse voltammetry,
  topic: keywords
subject: CuS nanosheets
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subject: environmental pollutants
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subject: chemically modified electrode
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creator: Ahmad Amer Al-Salman
creator: Rafah Mohammed Thyab
creator: Muhammad Abdel Hasan Shallal
rights: Copyright (c) 2025 Ahmad Amer Al-Salman, Rafah Mohammed Thyab, Muhammad Abdel Hasan Shallal https://creativecommons.org/licenses/by/4.0
date: 2025-07-23
publication date: 2025-07-23
doi: 10.5599/jese.2832